Unfortunately I have two of my own of both the Jirachi and the Manaphy, and a competitive Zekrom that is from ORAS (so it can actually be used in VGC). I'm generally not after legendaries from previous generations unless there's something unique about them (like they know Defog, for example). Do you have any other events that I don't have already?
I feel like Nintendo's current business practices of appealing to a young demographic of gamers while sweeping the old demographic of gamers that's followed them since they saved the video game industry 31 years ago under the rug has gone to backfire on them.
I think we should not ignore that a significant portion of the older fanbase are composed of people like this.